DE3825698C2 - - Google Patents
Info
- Publication number
- DE3825698C2 DE3825698C2 DE3825698A DE3825698A DE3825698C2 DE 3825698 C2 DE3825698 C2 DE 3825698C2 DE 3825698 A DE3825698 A DE 3825698A DE 3825698 A DE3825698 A DE 3825698A DE 3825698 C2 DE3825698 C2 DE 3825698C2
- Authority
- DE
- Germany
- Prior art keywords
- data
- complex
- phase
- magnetic field
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003384 imaging method Methods 0.000 claims description 21
- 238000005481 NMR spectroscopy Methods 0.000 claims description 13
- 238000012937 correction Methods 0.000 claims description 11
- 238000013507 mapping Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000003754 machining Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000002075 inversion recovery Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- RGCLLPNLLBQHPF-HJWRWDBZSA-N phosphamidon Chemical compound CCN(CC)C(=O)C(\Cl)=C(/C)OP(=O)(OC)OC RGCLLPNLLBQHPF-HJWRWDBZSA-N 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 1
- 238000013421 nuclear magnetic resonance imaging Methods 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
Landscapes
- Physics & Mathematics (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- General Health & Medical Sciences (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Image Processing (AREA)
- Image Analysis (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62190019A JPS6434344A (en) | 1987-07-31 | 1987-07-31 | Phase correcting method in magnetic resonance imaging apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3825698A1 DE3825698A1 (de) | 1989-02-09 |
| DE3825698C2 true DE3825698C2 (cg-RX-API-DMAC7.html) | 1991-05-23 |
Family
ID=16251015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3825698A Granted DE3825698A1 (de) | 1987-07-31 | 1988-07-28 | Phasenkorrekturverfahren fuer ein nmr-abbildungssystem und vorrichtung zur durchfuehrung des verfahrens |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4902974A (cg-RX-API-DMAC7.html) |
| JP (1) | JPS6434344A (cg-RX-API-DMAC7.html) |
| DE (1) | DE3825698A1 (cg-RX-API-DMAC7.html) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04364829A (ja) * | 1990-02-15 | 1992-12-17 | Toshiba Corp | 磁気共鳴画像処理方法及び装置 |
| DE4005675C2 (de) * | 1990-02-22 | 1995-06-29 | Siemens Ag | Verfahren zur Unterdrückung von Artefakten bei der Bilderzeugung mittels kernmagnetischer Resonanz |
| US5151655A (en) * | 1990-02-23 | 1992-09-29 | Baylor Research Institute | Magnetic resonance imaging using a back-to-back pulse sequence |
| US6263228B1 (en) | 1998-08-27 | 2001-07-17 | Toshiba America, Mri, Inc. | Method and apparatus for providing separate water-dominant and fat-dominant images from single scan single point dixon MRI sequences |
| US6192263B1 (en) * | 1998-09-01 | 2001-02-20 | General Electric Company | Phase-sensitive inversion recovery method of MR imaging |
| JP4558866B2 (ja) * | 1999-10-22 | 2010-10-06 | Ｇｅヘルスケア・ジャパン株式会社 | 位相分布測定方法および装置、位相補正方法および装置、並びに、磁気共鳴撮像装置 |
| DE10036207B4 (de) * | 2000-07-25 | 2006-11-30 | Siemens Ag | Verfahren zum Durchführen einer Perfusionsmessung mittels Magnetresonanzbildgebung |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61194338A (ja) * | 1985-02-25 | 1986-08-28 | Yokogawa Electric Corp | 核磁気共鳴撮像装置の位相およびシエ−デイング補正方法 |
| US4661775A (en) * | 1985-07-15 | 1987-04-28 | Technicare Corporation | Chemical shift imaging with field inhomogeneity correction |
| US4720679A (en) * | 1985-12-31 | 1988-01-19 | Picker International, Inc. | Magnetic resonance imaging with phase encoded chemical shift correction |
-
1987
- 1987-07-31 JP JP62190019A patent/JPS6434344A/ja active Pending
-
1988
- 1988-07-28 DE DE3825698A patent/DE3825698A1/de active Granted
- 1988-07-29 US US07/225,777 patent/US4902974A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US4902974A (en) | 1990-02-20 |
| DE3825698A1 (de) | 1989-02-09 |
| JPS6434344A (en) | 1989-02-03 |
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| DE69027879T2 (de) | Multi-Echo-NMR-Abbildungsverfahren |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8128 | New person/name/address of the agent |
Representative=s name: STREHL, P., DIPL.-ING. DIPL.-WIRTSCH.-ING. SCHUEBE |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |